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Question
Solve the following simultaneous equation.
x − 2y = −2 ; x + 2y = 10
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Solution
x − 2y = −2 ...(I)
x + 2y = 10 ...(II)
Adding (I) and (II)
x − 2y = −2
+ x + 2y = 10
2x = 8
⇒ x = 4
Putting the value of x in (I) we get
∴ x - 2y = −2
⇒ 4 − 2y = −2
⇒ −2y = −6
⇒ y = 3
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